Printing-press



(ModeL) O. D. LLOYD.

I PRINTING PRESS. No. 285,421. Patented Sept. 25, 1883.

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, UNITED STATE PATENT OFFICE.

CHARLES D. LLOYD, or FRAMINGHAM, MASSACHUSETTS.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 285,421, datedSeptember 25, 1883.

Application filed March 15, 1883. (Model) To all whom it may concern.-

\ Be it known that I, OHARLESYD. LLOYD, of Framingham, in the county ofMiddlesex, State of Massachusetts, have invented a certain new anduseful Improvement in Printing-Presses, of which the following is adescription sufficiently full, clear, and exact to enable any personskilled in the art or science to which said invention appertains to makeand use the same, reference being had to the accompanying drawings,forming a part of this specifica tion, in which Figure l is-anisometrical perspective view representing a printing-press provided withmy improvement, and Fig. 2 a front elevation showing the roll-shiftingmechanism detached.

Likeletters of reference indicate correspond. ing parts in the differentfigures of the drawings.

Myinvention relates to the inking mechanism of the press; and itconsists in a novel construction and arrangement of the parts, ashereinafter more fully set forth and claimed, by which a more effectivedevice of this character is produced than is now in ordinary use.

In the Gordon job-press and all presses of similar construction having arotating distributing-disk the inking-rolls, after having received asupply of ink from the distributingdisk, are passed over the form incontact with the type and returned to the distributing-disk again in thesame course or over the same line of traverse, thus rendering theprocess of inkingthe typeliable to be imperfectly performed. Myimprovement is designed to obviate this objection, and to that end Imake use of means which will be readily understood by all conversantwith such matters from the following explanation, the extreme simplicityof the invention rendering an elaborate description unnecessary. I 1

In the drawings, A represents the bed of the machine on which the formis secured, B

the ink-rolls, and O the distributing-disk, these parts being allconstructed and arranged in the ordinary manner, except as hereinafterspecified. The rolls are provided with the usual supporting-trucks G E,which are fitted to run the annular grooves m and flanges D. Athinflange or wall, K, is raised along the outer side of the track II, thisflange corresponding nearly in thickness and height with the width anddepth of the grooves m. A section of the wall near its upper end isremoved, as shown at d a, the lower cut, d, being at right angles, andthe upper cut, a, diagonal to the sides of the wall. A switch-tongue, L,is fitted into the aperture between the cuts and provided on its outerside with a flat spring, f, one end I of which is attached to the walland the other to the tongue, the spring forming a hinge at its lowerend, and acting to force the tongue inwardly into the aperture and closethe same, thereby rendering the wall continuous at that point. A similaraperture is formed in the lower part of the wall, into which aswitchtongue, M, is fitted, and provided with a spring, 9, on its innerside, the spring forming a hinge at the upper end of the tongue, andacting to press the tongue outwardly instead of inwardly in closing theaperture. Arranged opposite the tongue L, on the other side of the trackH,there is a raised flange, N, having a camshaped face, Z, and oppositethe tongue M, out side of the same, there is a guardor flange, R, itslower end being curved inwardly and attached to the wall K, and itsupper end free. The track H is made slightly wider than the length ofthe'truck G, including the groove on and flange D, to enable the truckto traverse freely over the same.

In the use of my improvement, the trucks G being on the track H, if,now, the press is started up to cause the rolls B to pass upwardly ontothe distributingdisk (1, when the trucks arrive opposite the tongue L,the inner edges of the trucks will strike thecam Z, as seen in Fig. 2,thereby shunting or forcing the trucks endwise against the tongue, andcausing it to open on its spring-hinge f. As the rolls continue to moveforward over the distributing-disk that part of the wall K above thetongue L will enter the grooves min the trucks, and when all of thetrucks have passed the tongue it will close or be forced back into the-position shown in Fig. 1. The motion of the rolls is now reversed, andas they pass downwardly over the distributing-disk, the tongue -L beingclosed and the wall rendered continuous, the trucks Gwill not return totheir nor- Ice mal position on the track H until they reach the lowerend of the same, when the flanges D will strike the curved inner face ofthe guard R and open the tongue M, thereby shunting the rolls andreturning the trucks G to their original position on the track H,preparatory to repassing the rolls over the type, in amanner which willbe readily obvious without a more explicit description.

It will be seen that the position of the rolls with respect to theink-distributing disk and also to the type is changed at each upward anddownward movement ofthe roll-carriers, thereby alternately changing theinkingsurfaces brought to bear on the type.

It will be understood that one or more rolls may be used, as desired,and that the diameter of the trucks G E is greater than that of the 7amines A spring may also be used in place of the cam l, although I deemthe cam preferable.

Having thus explained my invention, what I claim'is 1. In aprinting-press, the track H and wall K, the wall being provided with thespringtongue L, in combination with the cam-flange N, grooved truck G,roll 13, and means, substantially as described, for shunting the roll orreturning the'truck to the track at the lower end of its course,substantially as set forth.

2. In a printing-press, the track H, eam- V CHARLES D. LLOYD.

lVitnesses:

GEORGE O. TRAvIs, GEORGE H. OHILDs.

